*Excludes Observations that span multiple months

  B
b
t
W
w
 
Jan00001010
Feb001034
Mar007007
Apr01547100486
May2106704600011132
Jun8214192630021690
Jul34778321830010000
Aug1471458001479
Sep032672002675
Oct1382900833
Nov01210022
Dec001003949
Total5939901837505248387